Gardner, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.3 °C (low) to 18.4 °C (high). Annual precipitation averages 1025.9 Millimeters. Gardner is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 4 °C | 31.5 mm |
| February | -4.5 °C | 6.4 °C | 42.16 mm |
| March | 0.8 °C | 12.6 °C | 62.74 mm |
| April | 6.7 °C | 18.4 °C | 101.85 mm |
| May | 12.8 °C | 23.6 °C | 138.18 mm |
| June | 18.2 °C | 28.8 °C | 137.16 mm |
| July | 20.5 °C | 31.4 °C | 112.01 mm |
| August | 19.4 °C | 30.8 °C | 106.68 mm |
| September | 14.7 °C | 26.6 °C | 106.43 mm |
| October | 7.8 °C | 19.7 °C | 86.36 mm |
| November | 1.6 °C | 12.8 °C | 57.4 mm |
| December | -4.1 °C | 5.9 °C | 43.43 mm |
| Annual | 7.3 °C | 18.4 °C | 1025.9 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |